EP 2342417 A4 20140423 - DRILL BIT WITH CONTINUOUSLY SHARP EDGE CUTTING ELEMENTS
Title (en)
DRILL BIT WITH CONTINUOUSLY SHARP EDGE CUTTING ELEMENTS
Title (de)
BOHRMEISSEL MIT DURCHGEHEND SCHARFKANTIGEN SCHNEIDEELEMENTEN
Title (fr)
TREPAN A ELEMENTS DE COUPE A ARÊTES CONTINUELLEMENT VIVES
Publication
Application
Priority
- US 2009060413 W 20091013
- US 25044508 A 20081013
Abstract (en)
[origin: US2010089664A1] A method of optimizing drill bit design and an optimized drill bit for drilling a well into an earth formation comprising a bit body; a number of blades spaced around the bit body, each blade having a curved outer edge and a forward face; a first row of cutter pockets recessed into the face along the outer edge of each blade; a second group of cutter pockets recessed into the face of each blade offset from the first row; and a plurality of cutting elements, each cutting element being brazed into a different one of the cutter pockets.
IPC 8 full level
E21B 10/43 (2006.01); B22F 5/00 (2006.01); E21B 10/00 (2006.01)
CPC (source: EP US)
E21B 10/006 (2013.01 - EP US); E21B 10/43 (2013.01 - EP US); B22F 2005/001 (2013.01 - EP US); B22F 2998/00 (2013.01 - EP US); C22C 2204/00 (2013.01 - EP US)
Citation (search report)
- [X] US 5025873 A 19910625 - CERKOVNIK JERRY [US]
- [X] US 5238074 A 19930824 - TIBBITTS GORDON A [US], et al
- See references of WO 2010045170A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
US 2010089664 A1 20100415; US 8020641 B2 20110920; BR PI0920193 A2 20190924; CA 2740218 A1 20100422; CA 2740218 C 20150414; CN 102216554 A 20111012; EP 2342417 A1 20110713; EP 2342417 A4 20140423; WO 2010045170 A1 20100422; WO 2010045170 A4 20100701
DOCDB simple family (application)
US 25044508 A 20081013; BR PI0920193 A 20091013; CA 2740218 A 20091013; CN 200980146022 A 20091013; EP 09821087 A 20091013; US 2009060413 W 20091013